| /* |
| * Copyright 2017, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "KeymasterDevice.h" |
| #include "buffer.h" |
| #include "export_key.h" |
| #include "import_key.h" |
| #include "import_wrapped_key.h" |
| #include "proto_utils.h" |
| |
| #include <Keymaster.client.h> |
| #include <nos/debug.h> |
| #include <nos/NuggetClient.h> |
| |
| #include <keymasterV4_0/key_param_output.h> |
| |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| |
| #include <algorithm> |
| |
| namespace android { |
| namespace hardware { |
| namespace keymaster { |
| |
| namespace { |
| |
| constexpr char PROPERTY_OS_VERSION[] = "ro.build.version.release"; |
| constexpr char PROPERTY_OS_PATCHLEVEL[] = "ro.build.version.security_patch"; |
| constexpr char PROPERTY_VENDOR_PATCHLEVEL[] = "ro.vendor.build.security_patch"; |
| |
| std::string DigitsOnly(const std::string& code) { |
| // Keep digits only. |
| std::string filtered_code; |
| std::copy_if(code.begin(), code.end(), std::back_inserter(filtered_code), |
| isdigit); |
| return filtered_code; |
| } |
| |
| /** Get one version number from a string and move loc to the point after the |
| * next version delimiter. |
| */ |
| uint32_t ExtractVersion(const std::string& version, size_t* loc) { |
| if (*loc == std::string::npos || *loc >= version.size()) { |
| return 0; |
| } |
| |
| uint32_t value = 0; |
| size_t new_loc = version.find('.', *loc); |
| if (new_loc == std::string::npos) { |
| auto sanitized = DigitsOnly(version.substr(*loc)); |
| if (!sanitized.empty()) { |
| if (sanitized.size() < version.size() - *loc) { |
| LOG(ERROR) << "Unexpected version format: \"" << version |
| << "\""; |
| } |
| value = std::stoi(sanitized); |
| } |
| *loc = new_loc; |
| } else { |
| auto sanitized = DigitsOnly(version.substr(*loc, new_loc - *loc)); |
| if (!sanitized.empty()) { |
| if (sanitized.size() < new_loc - *loc) { |
| LOG(ERROR) << "Unexpected version format: \"" << version |
| << "\""; |
| } |
| value = std::stoi(sanitized); |
| } |
| *loc = new_loc + 1; |
| } |
| return value; |
| } |
| |
| uint32_t VersionToUint32(const std::string& version) { |
| size_t loc = 0; |
| uint32_t major = ExtractVersion(version, &loc); |
| uint32_t minor = ExtractVersion(version, &loc); |
| uint32_t subminor = ExtractVersion(version, &loc); |
| return major * 10000 + minor * 100 + subminor; |
| } |
| |
| uint32_t DateCodeToUint32(const std::string& code, bool include_day) { |
| // Keep digits only. |
| std::string filtered_code = DigitsOnly(code); |
| |
| // Return 0 if the date string has an unexpected number of digits. |
| uint32_t return_value = 0; |
| if (filtered_code.size() == 8) { |
| return_value = std::stoi(filtered_code); |
| if (!include_day) { |
| return_value /= 100; |
| } |
| } else if (filtered_code.size() == 6) { |
| return_value = std::stoi(filtered_code); |
| if (include_day) { |
| return_value *= 100; |
| } |
| } else { |
| LOG(ERROR) << "Unexpected patchset format: \"" << code << "\""; |
| } |
| return return_value; |
| } |
| |
| } // namespace |
| |
| // std |
| using std::string; |
| |
| // base |
| using ::android::base::GetProperty; |
| |
| // libhidl |
| using ::android::hardware::Void; |
| |
| // HAL |
| using ::android::hardware::keymaster::V4_0::Algorithm; |
| using ::android::hardware::keymaster::V4_0::KeyCharacteristics; |
| using ::android::hardware::keymaster::V4_0::KeyFormat; |
| using ::android::hardware::keymaster::V4_0::HardwareAuthToken; |
| using ::android::hardware::keymaster::V4_0::HardwareAuthenticatorType; |
| using ::android::hardware::keymaster::V4_0::SecurityLevel; |
| using ::android::hardware::keymaster::V4_0::Tag; |
| |
| // nos |
| using nos::NuggetClient; |
| |
| // Keymaster app |
| // KM 3.0 types |
| using ::nugget::app::keymaster::AddRngEntropyRequest; |
| using ::nugget::app::keymaster::AddRngEntropyResponse; |
| using ::nugget::app::keymaster::GenerateKeyRequest; |
| using ::nugget::app::keymaster::GenerateKeyResponse; |
| using ::nugget::app::keymaster::GetKeyCharacteristicsRequest; |
| using ::nugget::app::keymaster::GetKeyCharacteristicsResponse; |
| using ::nugget::app::keymaster::ImportKeyRequest; |
| using ::nugget::app::keymaster::ImportKeyResponse; |
| using ::nugget::app::keymaster::ExportKeyRequest; |
| using ::nugget::app::keymaster::ExportKeyResponse; |
| using ::nugget::app::keymaster::StartAttestKeyRequest; |
| using ::nugget::app::keymaster::StartAttestKeyResponse; |
| using ::nugget::app::keymaster::ContinueAttestKeyRequest; |
| using ::nugget::app::keymaster::ContinueAttestKeyResponse; |
| using ::nugget::app::keymaster::FinishAttestKeyRequest; |
| using ::nugget::app::keymaster::FinishAttestKeyResponse; |
| using ::nugget::app::keymaster::UpgradeKeyRequest; |
| using ::nugget::app::keymaster::UpgradeKeyResponse; |
| using ::nugget::app::keymaster::DeleteKeyRequest; |
| using ::nugget::app::keymaster::DeleteKeyResponse; |
| using ::nugget::app::keymaster::DeleteAllKeysRequest; |
| using ::nugget::app::keymaster::DeleteAllKeysResponse; |
| using ::nugget::app::keymaster::DestroyAttestationIdsRequest; |
| using ::nugget::app::keymaster::DestroyAttestationIdsResponse; |
| using ::nugget::app::keymaster::BeginOperationRequest; |
| using ::nugget::app::keymaster::BeginOperationResponse; |
| using ::nugget::app::keymaster::UpdateOperationRequest; |
| using ::nugget::app::keymaster::UpdateOperationResponse; |
| using ::nugget::app::keymaster::FinishOperationRequest; |
| using ::nugget::app::keymaster::FinishOperationResponse; |
| using ::nugget::app::keymaster::AbortOperationRequest; |
| using ::nugget::app::keymaster::AbortOperationResponse; |
| using ::nugget::app::keymaster::ComputeSharedHmacRequest; |
| using ::nugget::app::keymaster::ComputeSharedHmacResponse; |
| using ::nugget::app::keymaster::GetHmacSharingParametersRequest; |
| using ::nugget::app::keymaster::GetHmacSharingParametersResponse; |
| using ::nugget::app::keymaster::SetSystemVersionInfoRequest; |
| using ::nugget::app::keymaster::SetSystemVersionInfoResponse; |
| using ::nugget::app::keymaster::GetBootInfoRequest; |
| using ::nugget::app::keymaster::GetBootInfoResponse; |
| |
| // KM 4.0 types |
| using ::nugget::app::keymaster::ImportWrappedKeyRequest; |
| namespace nosapp = ::nugget::app::keymaster; |
| |
| static ErrorCode status_to_error_code(uint32_t status) |
| { |
| switch (status) { |
| case APP_SUCCESS: |
| return ErrorCode::OK; |
| break; |
| case APP_ERROR_BOGUS_ARGS: |
| return ErrorCode::INVALID_ARGUMENT; |
| break; |
| case APP_ERROR_INTERNAL: |
| return ErrorCode::UNKNOWN_ERROR; |
| break; |
| case APP_ERROR_TOO_MUCH: |
| return ErrorCode::INSUFFICIENT_BUFFER_SPACE; |
| break; |
| case APP_ERROR_RPC: |
| return ErrorCode::SECURE_HW_COMMUNICATION_FAILED; |
| break; |
| // TODO: app specific error codes go here. |
| default: |
| return ErrorCode::UNKNOWN_ERROR; |
| break; |
| } |
| } |
| |
| #define KM_CALL(meth, request, response) { \ |
| const uint32_t status = _keymaster. meth (request, &response); \ |
| const ErrorCode error_code = translate_error_code(response.error_code()); \ |
| if (status != APP_SUCCESS) { \ |
| LOG(ERROR) << #meth << " : request failed with status: " \ |
| << nos::StatusCodeString(status); \ |
| return status_to_error_code(status); \ |
| } \ |
| if (error_code != ErrorCode::OK) { \ |
| LOG(ERROR) << #meth << " : device response error code: " \ |
| << error_code; \ |
| return error_code; \ |
| } \ |
| } |
| |
| #define KM_CALLV(meth, request, response, ...) { \ |
| const uint32_t status = _keymaster. meth (request, &response); \ |
| const ErrorCode error_code = translate_error_code(response.error_code()); \ |
| if (status != APP_SUCCESS) { \ |
| LOG(ERROR) << #meth << " : request failed with status: " \ |
| << nos::StatusCodeString(status); \ |
| _hidl_cb(status_to_error_code(status), __VA_ARGS__); \ |
| return Void(); \ |
| } \ |
| if (error_code != ErrorCode::OK) { \ |
| LOG(ERROR) << #meth << " : device response error code: " \ |
| << error_code; \ |
| _hidl_cb(error_code, __VA_ARGS__); \ |
| return Void(); \ |
| } \ |
| } |
| |
| // Methods from ::android::hardware::keymaster::V3_0::IKeymasterDevice follow. |
| |
| KeymasterDevice::KeymasterDevice(KeymasterClient& keymaster) : |
| _keymaster{keymaster} { |
| _os_version = VersionToUint32(GetProperty(PROPERTY_OS_VERSION, "")); |
| _os_patchlevel = DateCodeToUint32(GetProperty(PROPERTY_OS_PATCHLEVEL, ""), |
| false /* include_day */); |
| _vendor_patchlevel = DateCodeToUint32( |
| GetProperty(PROPERTY_VENDOR_PATCHLEVEL, ""), |
| true /* include_day */); |
| |
| SendSystemVersionInfo(); |
| GetBootInfo(); |
| } |
| |
| Return<void> KeymasterDevice::getHardwareInfo( |
| getHardwareInfo_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::getHardwareInfo"; |
| |
| (void)_keymaster; |
| _hidl_cb(SecurityLevel::STRONGBOX, |
| string("CitadelKeymaster"), string("Google")); |
| |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::getHmacSharingParameters( |
| getHmacSharingParameters_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::getHmacSharingParameters"; |
| |
| GetHmacSharingParametersRequest request; |
| GetHmacSharingParametersResponse response; |
| HmacSharingParameters result; |
| |
| KM_CALLV(GetHmacSharingParameters, request, response, result); |
| |
| ErrorCode ec = translate_error_code(response.error_code()); |
| |
| if (ec != ErrorCode::OK) { |
| _hidl_cb(ec, HmacSharingParameters()); |
| } |
| |
| const std::string & nonce = response.hmac_sharing_params().nonce(); |
| const std::string & seed = response.hmac_sharing_params().seed(); |
| |
| if (seed.size() == 32) { |
| result.seed.setToExternal(reinterpret_cast<uint8_t*>( |
| const_cast<char*>(seed.data())), |
| seed.size(), false); |
| } else if (seed.size() != 0) { |
| LOG(ERROR) << "Citadel returned unexpected seed size: " |
| << seed.size(); |
| _hidl_cb(ErrorCode::UNKNOWN_ERROR, HmacSharingParameters()); |
| return Void(); |
| } |
| |
| if (nonce.size() == result.nonce.size()) { |
| std::copy(nonce.begin(), nonce.end(), result.nonce.data()); |
| } else { |
| LOG(ERROR) << "Citadel returned unexpected nonce size: " |
| << nonce.size(); |
| _hidl_cb(ErrorCode::UNKNOWN_ERROR, HmacSharingParameters()); |
| return Void(); |
| } |
| |
| _hidl_cb(ec, result); |
| |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::computeSharedHmac( |
| const hidl_vec<HmacSharingParameters>& params, |
| computeSharedHmac_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::computeSharedHmac"; |
| |
| ComputeSharedHmacRequest request; |
| ComputeSharedHmacResponse response; |
| hidl_vec<uint8_t> result; |
| |
| for (const HmacSharingParameters & param : params) { |
| // TODO respect max number of parameters defined in |
| // keymaster_types.proto |
| nosapp::HmacSharingParameters* req_param = |
| request.add_hmac_sharing_params(); |
| req_param->set_nonce( |
| reinterpret_cast<const int8_t*>( |
| param.nonce.data()), param.nonce.size()); |
| req_param->set_seed(reinterpret_cast<const int8_t*>(param.seed.data()), |
| param.seed.size()); |
| } |
| |
| KM_CALLV(ComputeSharedHmac, request, response, result); |
| |
| ErrorCode ec = translate_error_code(response.error_code()); |
| |
| if (ec != ErrorCode::OK) { |
| _hidl_cb(ec, result); |
| return Void(); |
| } |
| |
| const std::string & share_check = response.sharing_check(); |
| |
| result.setToExternal(reinterpret_cast<uint8_t*>( |
| const_cast<char*>(share_check.data())), share_check.size(), false); |
| _hidl_cb(ec, result); |
| |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::verifyAuthorization( |
| uint64_t operationHandle, const hidl_vec<KeyParameter>& parametersToVerify, |
| const HardwareAuthToken& authToken, verifyAuthorization_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::verifyAuthorization"; |
| |
| (void)operationHandle; |
| (void)parametersToVerify; |
| (void)authToken; |
| |
| (void)_keymaster; |
| _hidl_cb(ErrorCode::UNIMPLEMENTED, VerificationToken()); |
| |
| return Void(); |
| } |
| |
| Return<ErrorCode> KeymasterDevice::addRngEntropy(const hidl_vec<uint8_t>& data) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::addRngEntropy"; |
| |
| if (!data.size()) return ErrorCode::OK; |
| |
| const size_t chunk_size = 1024; |
| for (size_t i = 0; i < data.size(); i += chunk_size) { |
| AddRngEntropyRequest request; |
| AddRngEntropyResponse response; |
| |
| request.set_data(&data[i], std::min(chunk_size, data.size() - i)); |
| |
| // Call device. |
| KM_CALL(AddRngEntropy, request, response); |
| } |
| |
| return ErrorCode::OK; |
| } |
| |
| Return<void> KeymasterDevice::generateKey( |
| const hidl_vec<KeyParameter>& keyParams, |
| generateKey_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::generateKey"; |
| |
| GenerateKeyRequest request; |
| GenerateKeyResponse response; |
| |
| hidl_vec<uint8_t> blob; |
| KeyCharacteristics characteristics; |
| if (hidl_params_to_pb( |
| keyParams, request.mutable_params()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, blob, characteristics); |
| return Void(); |
| } |
| |
| // Call device. |
| KM_CALLV(GenerateKey, request, response, |
| hidl_vec<uint8_t>{}, KeyCharacteristics()); |
| |
| blob.setToExternal( |
| reinterpret_cast<uint8_t*>( |
| const_cast<char*>(response.blob().blob().data())), |
| response.blob().blob().size(), false); |
| pb_to_hidl_params(response.characteristics().software_enforced(), |
| &characteristics.softwareEnforced); |
| pb_to_hidl_params(response.characteristics().tee_enforced(), |
| &characteristics.hardwareEnforced); |
| |
| _hidl_cb(translate_error_code(response.error_code()), |
| blob, characteristics); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::getKeyCharacteristics( |
| const hidl_vec<uint8_t>& keyBlob, |
| const hidl_vec<uint8_t>& clientId, |
| const hidl_vec<uint8_t>& appData, |
| getKeyCharacteristics_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::getKeyCharacteristics"; |
| |
| GetKeyCharacteristicsRequest request; |
| GetKeyCharacteristicsResponse response; |
| |
| request.mutable_blob()->set_blob(&keyBlob[0], keyBlob.size()); |
| request.set_client_id(&clientId[0], clientId.size()); |
| request.set_app_data(&appData[0], appData.size()); |
| |
| // Call device. |
| KM_CALLV(GetKeyCharacteristics, request, response, KeyCharacteristics()); |
| |
| KeyCharacteristics characteristics; |
| pb_to_hidl_params(response.characteristics().software_enforced(), |
| &characteristics.softwareEnforced); |
| pb_to_hidl_params(response.characteristics().tee_enforced(), |
| &characteristics.hardwareEnforced); |
| |
| _hidl_cb(translate_error_code(response.error_code()), characteristics); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::importKey( |
| const hidl_vec<KeyParameter>& params, KeyFormat keyFormat, |
| const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::importKey"; |
| |
| ErrorCode error; |
| ImportKeyRequest request; |
| ImportKeyResponse response; |
| |
| error = import_key_request(params, keyFormat, keyData, &request); |
| if (error != ErrorCode::OK) { |
| LOG(ERROR) << "ImportKey request parsing failed with error " |
| << error; |
| _hidl_cb(error, hidl_vec<uint8_t>{}, KeyCharacteristics{}); |
| return Void(); |
| } |
| |
| KM_CALLV(ImportKey, request, response, |
| hidl_vec<uint8_t>{}, KeyCharacteristics{}); |
| |
| hidl_vec<uint8_t> blob; |
| blob.setToExternal( |
| reinterpret_cast<uint8_t*>( |
| const_cast<char*>(response.blob().blob().data())), |
| response.blob().blob().size(), false); |
| |
| KeyCharacteristics characteristics; |
| pb_to_hidl_params(response.characteristics().software_enforced(), |
| &characteristics.softwareEnforced); |
| error = pb_to_hidl_params(response.characteristics().tee_enforced(), |
| &characteristics.hardwareEnforced); |
| if (error != ErrorCode::OK) { |
| LOG(ERROR) << "KeymasterDevice::importKey: response tee_enforced :" |
| << error; |
| _hidl_cb(error, hidl_vec<uint8_t>{}, KeyCharacteristics{}); |
| return Void(); |
| } |
| |
| _hidl_cb(ErrorCode::OK, blob, characteristics); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::exportKey( |
| KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob, |
| const hidl_vec<uint8_t>& clientId, |
| const hidl_vec<uint8_t>& appData, exportKey_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::exportKey"; |
| |
| ExportKeyRequest request; |
| ExportKeyResponse response; |
| |
| request.set_format((::nugget::app::keymaster::KeyFormat)exportFormat); |
| request.mutable_blob()->set_blob(&keyBlob[0], keyBlob.size()); |
| request.set_client_id(&clientId[0], clientId.size()); |
| request.set_app_data(&appData[0], appData.size()); |
| |
| KM_CALLV(ExportKey, request, response, hidl_vec<uint8_t>{}); |
| |
| hidl_vec<uint8_t> der; |
| ErrorCode error_code = export_key_der(response, &der); |
| if (error_code != ErrorCode::OK) { |
| LOG(ERROR) << "KeymasterDevice::exportKey: DER conversion failed: " |
| << error_code; |
| _hidl_cb(error_code, hidl_vec<uint8_t>{}); |
| return Void(); |
| } |
| |
| _hidl_cb(error_code, der); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::attestKey( |
| const hidl_vec<uint8_t>& keyToAttest, |
| const hidl_vec<KeyParameter>& attestParams, |
| attestKey_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::attestKey"; |
| |
| StartAttestKeyRequest startRequest; |
| StartAttestKeyResponse startResponse; |
| |
| startRequest.mutable_blob()->set_blob(&keyToAttest[0], keyToAttest.size()); |
| |
| vector<hidl_vec<uint8_t> > chain; |
| if (hidl_params_to_pb( |
| attestParams, startRequest.mutable_params()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, chain); |
| return Void(); |
| } |
| |
| // TODO: |
| // startRequest.set_attestation_app_id_len( |
| // attestation_app_id_len(attestParams)); |
| |
| KM_CALLV(StartAttestKey, startRequest, startResponse, |
| hidl_vec<hidl_vec<uint8_t> >{}); |
| |
| uint64_t operationHandle = startResponse.handle().handle(); |
| ContinueAttestKeyRequest continueRequest; |
| ContinueAttestKeyResponse continueResponse; |
| |
| continueRequest.mutable_handle()->set_handle(operationHandle); |
| // TODO |
| // continueRequest.set_attestation_app_id( |
| // attestation_app_id(attestParams)); |
| |
| KM_CALLV(ContinueAttestKey, continueRequest, continueResponse, |
| hidl_vec<hidl_vec<uint8_t> >{}); |
| |
| FinishAttestKeyRequest finishRequest; |
| FinishAttestKeyResponse finishResponse; |
| |
| finishRequest.mutable_handle()->set_handle(operationHandle); |
| |
| KM_CALLV(FinishAttestKey, finishRequest, finishResponse, |
| hidl_vec<hidl_vec<uint8_t> >{}); |
| |
| std::stringstream ss; |
| ss << startResponse.certificate_prologue(); |
| ss << continueResponse.certificate_body(); |
| ss << finishResponse.certificate_epilogue(); |
| |
| hidl_vec<uint8_t> attestation_certificate; |
| attestation_certificate.setToExternal( |
| reinterpret_cast<uint8_t*>( |
| const_cast<char*>(ss.str().data())), |
| ss.str().size(), false); |
| |
| chain.push_back(attestation_certificate); |
| // TODO: |
| // chain.push_back(intermediate_certificate()); |
| // chain.push_back(root_certificate()); |
| // verify cert chain |
| |
| _hidl_cb(ErrorCode::OK, hidl_vec<hidl_vec<uint8_t> >(chain)); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::upgradeKey( |
| const hidl_vec<uint8_t>& keyBlobToUpgrade, |
| const hidl_vec<KeyParameter>& upgradeParams, |
| upgradeKey_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::upgradeKey"; |
| |
| UpgradeKeyRequest request; |
| UpgradeKeyResponse response; |
| |
| request.mutable_blob()->set_blob(&keyBlobToUpgrade[0], |
| keyBlobToUpgrade.size()); |
| |
| hidl_vec<uint8_t> blob; |
| if (hidl_params_to_pb( |
| upgradeParams, request.mutable_params()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, blob); |
| return Void(); |
| } |
| |
| KM_CALLV(UpgradeKey, request, response, hidl_vec<uint8_t>{}); |
| |
| blob.setToExternal( |
| reinterpret_cast<uint8_t*>( |
| const_cast<char*>(response.blob().blob().data())), |
| response.blob().blob().size(), false); |
| |
| _hidl_cb(translate_error_code(response.error_code()), blob); |
| return Void(); |
| } |
| |
| Return<ErrorCode> KeymasterDevice::deleteKey(const hidl_vec<uint8_t>& keyBlob) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::deleteKey"; |
| |
| DeleteKeyRequest request; |
| DeleteKeyResponse response; |
| |
| request.mutable_blob()->set_blob(&keyBlob[0], keyBlob.size()); |
| |
| KM_CALL(DeleteKey, request, response); |
| |
| return translate_error_code(response.error_code()); |
| } |
| |
| Return<ErrorCode> KeymasterDevice::deleteAllKeys() |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::deleteAllKeys"; |
| |
| DeleteAllKeysRequest request; |
| DeleteAllKeysResponse response; |
| |
| KM_CALL(DeleteAllKeys, request, response); |
| |
| return translate_error_code(response.error_code()); |
| } |
| |
| Return<ErrorCode> KeymasterDevice::destroyAttestationIds() |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::destroyAttestationIds"; |
| |
| DestroyAttestationIdsRequest request; |
| DestroyAttestationIdsResponse response; |
| |
| KM_CALL(DestroyAttestationIds, request, response); |
| |
| return translate_error_code(response.error_code()); |
| } |
| |
| Return<void> KeymasterDevice::begin( |
| KeyPurpose purpose, const hidl_vec<uint8_t>& key, |
| const hidl_vec<KeyParameter>& inParams, |
| const HardwareAuthToken& authToken, |
| begin_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::begin"; |
| |
| BeginOperationRequest request; |
| BeginOperationResponse response; |
| |
| request.set_purpose((::nugget::app::keymaster::KeyPurpose)purpose); |
| request.mutable_blob()->set_blob(&key[0], key.size()); |
| |
| hidl_vec<KeyParameter> params; |
| tag_map_t tag_map; |
| if (translate_auth_token( |
| authToken, request.mutable_auth_token()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, params, |
| response.handle().handle()); |
| return Void(); |
| } |
| if (hidl_params_to_pb( |
| inParams, request.mutable_params()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, params, |
| response.handle().handle()); |
| return Void(); |
| } |
| if (hidl_params_to_map(inParams, &tag_map) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, params, |
| response.handle().handle()); |
| return Void(); |
| } |
| |
| KM_CALLV(BeginOperation, request, response, hidl_vec<KeyParameter>{}, 0); |
| |
| // Setup HAL buffering for this operation's data. |
| Algorithm algorithm; |
| if (translate_algorithm(response.algorithm(), &algorithm) != |
| ErrorCode::OK) { |
| if (this->abort(response.handle().handle()) != ErrorCode::OK) { |
| LOG(ERROR) << "abort( " << response.handle().handle() |
| << ") failed"; |
| } |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, params, |
| response.handle().handle()); |
| return Void(); |
| } |
| ErrorCode error_code = buffer_begin(response.handle().handle(), algorithm); |
| if (error_code != ErrorCode::OK) { |
| if (this->abort(response.handle().handle()) != ErrorCode::OK) { |
| LOG(ERROR) << "abort( " << response.handle().handle() |
| << ") failed"; |
| } |
| _hidl_cb(ErrorCode::UNKNOWN_ERROR, params, |
| response.handle().handle()); |
| return Void(); |
| } |
| |
| pb_to_hidl_params(response.params(), ¶ms); |
| |
| _hidl_cb(translate_error_code(response.error_code()), params, |
| response.handle().handle()); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::update( |
| uint64_t operationHandle, |
| const hidl_vec<KeyParameter>& inParams, |
| const hidl_vec<uint8_t>& input, |
| const HardwareAuthToken& authToken, |
| const VerificationToken& verificationToken, |
| update_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::update"; |
| |
| UpdateOperationRequest request; |
| UpdateOperationResponse response; |
| |
| // TODO: does keystore chunk stream data? To what quantum? |
| if (input.size() > KM_MAX_PROTO_FIELD_SIZE) { |
| LOG(ERROR) << "Excess input length: " << input.size() |
| << " max allowed: " << KM_MAX_PROTO_FIELD_SIZE; |
| if (this->abort(operationHandle) != ErrorCode::OK) { |
| LOG(ERROR) << "abort( " << operationHandle |
| << ") failed"; |
| } |
| _hidl_cb(ErrorCode::INVALID_INPUT_LENGTH, 0, |
| hidl_vec<KeyParameter>{}, hidl_vec<uint8_t>{}); |
| return Void(); |
| } |
| |
| uint32_t consumed; |
| hidl_vec<uint8_t> output; |
| hidl_vec<KeyParameter> params; |
| ErrorCode error_code; |
| error_code = buffer_append(operationHandle, input, &consumed); |
| if (error_code != ErrorCode::OK) { |
| _hidl_cb(error_code, 0, params, output); |
| return Void(); |
| } |
| |
| hidl_vec<uint8_t> blocks; |
| error_code = buffer_peek(operationHandle, &blocks); |
| if (error_code != ErrorCode::OK) { |
| _hidl_cb(error_code, 0, params, output); |
| return Void(); |
| } |
| |
| if (blocks.size() == 0) { |
| // Insufficient data available to proceed. |
| _hidl_cb(ErrorCode::OK, consumed, params, output); |
| return Void(); |
| } |
| |
| request.mutable_handle()->set_handle(operationHandle); |
| |
| if (hidl_params_to_pb( |
| inParams, request.mutable_params()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, 0, params, output); |
| return Void(); |
| } |
| |
| request.set_input(&blocks[0], blocks.size()); |
| if (translate_auth_token( |
| authToken, request.mutable_auth_token()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, 0, params, output); |
| return Void(); |
| } |
| translate_verification_token(verificationToken, |
| request.mutable_verification_token()); |
| |
| KM_CALLV(UpdateOperation, request, response, |
| 0, hidl_vec<KeyParameter>{}, hidl_vec<uint8_t>{}); |
| |
| if (buffer_advance(operationHandle, response.consumed()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::UNKNOWN_ERROR, 0, params, output); |
| return Void(); |
| } |
| |
| pb_to_hidl_params(response.params(), ¶ms); |
| output.setToExternal( |
| reinterpret_cast<uint8_t*>(const_cast<char*>(response.output().data())), |
| response.output().size(), false); |
| |
| _hidl_cb(ErrorCode::OK, consumed, params, output); |
| return Void(); |
| } |
| |
| Return<void> KeymasterDevice::finish( |
| uint64_t operationHandle, |
| const hidl_vec<KeyParameter>& inParams, |
| const hidl_vec<uint8_t>& input, |
| const hidl_vec<uint8_t>& signature, |
| const HardwareAuthToken& authToken, |
| const VerificationToken& verificationToken, |
| finish_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::finish"; |
| |
| FinishOperationRequest request; |
| FinishOperationResponse response; |
| |
| if (input.size() > KM_MAX_PROTO_FIELD_SIZE) { |
| LOG(ERROR) << "Excess input length: " << input.size() |
| << " max allowed: " << KM_MAX_PROTO_FIELD_SIZE; |
| if (this->abort(operationHandle) != ErrorCode::OK) { |
| LOG(ERROR) << "abort( " << operationHandle |
| << ") failed"; |
| } |
| _hidl_cb(ErrorCode::INVALID_INPUT_LENGTH, |
| hidl_vec<KeyParameter>{}, hidl_vec<uint8_t>{}); |
| return Void(); |
| } |
| |
| uint32_t consumed; |
| ErrorCode error_code; |
| error_code = buffer_append(operationHandle, input, &consumed); |
| if (error_code != ErrorCode::OK) { |
| _hidl_cb(error_code, |
| hidl_vec<KeyParameter>{}, hidl_vec<uint8_t>{}); |
| return Void(); |
| } |
| |
| hidl_vec<uint8_t> data; |
| error_code = buffer_final(operationHandle, &data); |
| if (error_code != ErrorCode::OK) { |
| _hidl_cb(error_code, |
| hidl_vec<KeyParameter>{}, hidl_vec<uint8_t>{}); |
| return Void(); |
| } |
| |
| request.mutable_handle()->set_handle(operationHandle); |
| |
| hidl_vec<KeyParameter> params; |
| hidl_vec<uint8_t> output; |
| if (hidl_params_to_pb( |
| inParams, request.mutable_params()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, params, output); |
| return Void(); |
| } |
| |
| request.set_input(&data[0], data.size()); |
| request.set_signature(&signature[0], signature.size()); |
| |
| if (translate_auth_token( |
| authToken, request.mutable_auth_token()) != ErrorCode::OK) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, params, output); |
| return Void(); |
| } |
| translate_verification_token(verificationToken, |
| request.mutable_verification_token()); |
| |
| KM_CALLV(FinishOperation, request, response, |
| hidl_vec<KeyParameter>{}, hidl_vec<uint8_t>{}); |
| |
| pb_to_hidl_params(response.params(), ¶ms); |
| output.setToExternal( |
| reinterpret_cast<uint8_t*>(const_cast<char*>(response.output().data())), |
| response.output().size(), false); |
| |
| _hidl_cb(ErrorCode::OK, params, output); |
| return Void(); |
| } |
| |
| Return<ErrorCode> KeymasterDevice::abort(uint64_t operationHandle) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::abort"; |
| |
| AbortOperationRequest request; |
| AbortOperationResponse response; |
| |
| request.mutable_handle()->set_handle(operationHandle); |
| |
| KM_CALL(AbortOperation, request, response); |
| |
| return ErrorCode::OK; |
| } |
| |
| // Methods from ::android::hardware::keymaster::V4_0::IKeymasterDevice follow. |
| Return<void> KeymasterDevice::importWrappedKey( |
| const hidl_vec<uint8_t>& wrappedKeyData, |
| const hidl_vec<uint8_t>& wrappingKeyBlob, |
| const hidl_vec<uint8_t>& maskingKey, |
| const hidl_vec<KeyParameter>& /* unwrappingParams */, |
| uint64_t /* passwordSid */, uint64_t /* biometricSid */, |
| importWrappedKey_cb _hidl_cb) |
| { |
| LOG(VERBOSE) << "Running KeymasterDevice::importWrappedKey"; |
| |
| ErrorCode error; |
| ImportWrappedKeyRequest request; |
| ImportKeyResponse response; |
| |
| if (maskingKey.size() != KM_WRAPPER_MASKING_KEY_SIZE) { |
| _hidl_cb(ErrorCode::INVALID_ARGUMENT, hidl_vec<uint8_t>{}, |
| KeyCharacteristics{}); |
| return Void(); |
| } |
| |
| error = import_wrapped_key_request(wrappedKeyData, wrappingKeyBlob, |
| maskingKey, &request); |
| if (error != ErrorCode::OK) { |
| LOG(ERROR) << "ImportWrappedKey request parsing failed with error " |
| << error; |
| _hidl_cb(error, hidl_vec<uint8_t>{}, KeyCharacteristics{}); |
| return Void(); |
| } |
| |
| KM_CALLV(ImportWrappedKey, request, response, |
| hidl_vec<uint8_t>{}, KeyCharacteristics{}); |
| |
| hidl_vec<uint8_t> blob; |
| blob.setToExternal( |
| reinterpret_cast<uint8_t*>( |
| const_cast<char*>(response.blob().blob().data())), |
| response.blob().blob().size(), false); |
| |
| KeyCharacteristics characteristics; |
| // TODO: anything to do here with softwareEnforced? |
| pb_to_hidl_params(response.characteristics().software_enforced(), |
| &characteristics.softwareEnforced); |
| error = pb_to_hidl_params(response.characteristics().tee_enforced(), |
| &characteristics.hardwareEnforced); |
| if (error != ErrorCode::OK) { |
| LOG(ERROR) << |
| "KeymasterDevice::importWrappedKey: response tee_enforced :" |
| << error; |
| _hidl_cb(error, hidl_vec<uint8_t>{}, KeyCharacteristics{}); |
| return Void(); |
| } |
| |
| _hidl_cb(ErrorCode::OK, blob, characteristics); |
| return Void(); |
| } |
| |
| // Private methods. |
| Return<ErrorCode> KeymasterDevice::SendSystemVersionInfo() const { |
| SetSystemVersionInfoRequest request; |
| SetSystemVersionInfoResponse response; |
| |
| request.set_system_version(_os_version); |
| request.set_system_security_level(_os_patchlevel); |
| request.set_vendor_security_level(_vendor_patchlevel); |
| |
| KM_CALL(SetSystemVersionInfo, request, response); |
| return ErrorCode::OK; |
| } |
| |
| Return<ErrorCode> KeymasterDevice::GetBootInfo() { |
| GetBootInfoRequest request; |
| GetBootInfoResponse response; |
| |
| KM_CALL(GetBootInfo, request, response); |
| |
| _is_unlocked = response.is_unlocked(); |
| _boot_color = response.boot_color(); |
| _boot_key.assign(response.boot_key().begin(), response.boot_key().end()); |
| _boot_hash.assign(response.boot_hash().begin(), response.boot_hash().end()); |
| return ErrorCode::OK; |
| } |
| |
| } // namespace keymaster |
| } // namespace hardware |
| } // namespace android |
